Tandem-coupled disk harrow



June 8 1926.

- E. w. ELROD TANDEM COUPLED DISK HARROW Filed April 10, I925 C5 Sheets-Sheet 1 I N VEN TOR.

Zrod, 7

A TTORNEIY.

June 8 1926. 1,588,177

I E. W. ELROD TANDEM COUPLED DISK HARROW Filed April -10. 1925 s Sheet-Sheet 2 I N VEN TOR.

Ell/2577 06,

ATTORNEY.

June 8 1926.

E. W. 'ELROD TANDEM COUPLED DISK HARROW I5 Sheets-Sheet 5 v A v Filed April 10, 1925 INVZ ZNTOR. I EWZIWQ.

, I ATTORNEY.

Patented June 8, 122.

UNITED STATES PATENT OFFICE.

EDDY WARREN ELROD, or LAFONTAINE; KANSAS.

,TANDEMLCOUPLED DISK HARROW.

, Application filed April 10, 1525. Serial No. 22,170.

This invention relates to disk barrows, and has for one of its ob ects to produce a device ofthis character adapted more particularly to break up the small ridges remaining after the ordinary harrow has passed over the field.

Another object of the invention is to improve and simplify the construction and increase the efficiency and utility of devices of this character.

invention consists in certain novel features of construction as hereinafter shown and described and then spec fically pointed out in the claims and in the drawings illustra I as these units are substantially alike the detailed description of one will sufiice for all. For the purpose of illustration four of the dick units are shown, two forward and two rear units, the several units being designated, respectively, by the characters A-BC and D the units A and B being the forward units and the units C and D being the rear units.

Each of the barrow units comprises a plurality of concavo convex disk elements 10 coupled bystocks or shanks 11 mounted upon shafts 10 The confronting ends of the innermost stock of each of the disk units is'enlarged and rounded to form buffer elements as shown at 12, to retain the units in operative position and preventoverlapping when adjusted.

A plurality of the shanksll of each section are replaced by bearings as shown in Fig. 3, the latter including a lower portion 11 and a cap portion 11 connected by holding bolts 11 and 11 Each of the caps 11 is formed with an upwardly directed keeper 11 and the rear bolt '11 is extended upward through the upper portion of the keeper, as shown. 7

Three of these bearings are employed in Vith these and other objects in view, the

eachof the sections, one near'each end, and one intermediateflthe ends.

A -substantially J-shaped forwardly ex-j tending supporting frame is couple'djto the rear bolt 11" of each of the intermediate bearlngs, the frame being formed of flat bars 17 oblong transversely, and bent upon themselves and engaging the bolts 11* at the bends of the frame and within the keeper 11 of the rear units and passing forwardly through the keepers 11 of; the forward units and spread apart to engage the...

' pivot bolts 11 of the forward units, and

unlted by rlvets 19"or by" other fastening devices. i

The sides of the supporting j frame 17 are coupled by a transverse stay member 20,; a

and connected at 21 to the stay member is a beam member v22. The beam member :ex tends forwardly and is provided with upper and lower straps 25-26, and pivotedat 27 betweenthe straps are casterwheels 28- The forward or curvedtportions .18, of the members 17 extend inwardlyv in end opposed relatlon as indicated and are secured to theunderside of the beam 22 adjacent its forward end by the bolts 23and 24.

The draft tongue is represented at 30, and is coupled at 31 to the caster wheel frame.

By this arrangement the disk; harrow units are supported to swing upon the rear bolts 11 of the intermediate bearing,

Operating members are provided to effect the swinging of the harrow units upon their pivots, each comprising a lever arm represented as a whole at 32, and connecting members each formed of a bar oblong transversely and bent intermediate the ends and engaging the rear bolts 11 of the inner bearings, and within the keepers 11 of the rear units and extending forwardly through;

the keepers 11 of the forward units and disten'dedto 'forin-bearings to engage the rear bolts 11 0f the inner bearings of the forward units, the parts .of the members 32 being united by rivets 33, fastening devices. I

At their forward ends the members 32 are directed inwardlyv and pivoted respectively'to the lower ends of operating levers 34 and 35, the latter in turn pivoted at 86 or other suitable 37 to toothed standards38-39 attached to p the beam'member 22.

The levers 34 and 35 are provided with pawl devices 40 and 41 to respectively len gage the teeth of the standards to lock the.

members 32 in adjusted. position. ,7 I

By this arrangement'the disk unitsA and C may be simultaneously.adjusted on. the bolts 11 of the intermediate bearings and the disk units Band D likewise adjusted upon the like bolts."

Thedisksiot :the 'rearaunitsare disposed in alinement with the. spaces between the disks of the forward disk units, so thattheycut and level the ridges left. between the disks ot-the" forward units,.thus eliminating the y ridges and thoroughly levelling and pulverizing the soil, and by adjusting thedisk units to a reater or lesser. de ree of an u- 1 substantially to the laritythe distance between the ridges may be effectuallycontrolled. Attached to eachot thekeepers 11 by the rear,bolt 1-1 otiejach bearing,is a U-shaped clip 42, one of which is shown detached. in

.Fig. h Coupled at 43 to each of the. clips 42-is a clamp bar 44, and connectedto each -set of the;clamp,bars are spaced supports 45, e thesupports corresponding in length disk units, as shown in Upper clamp bars 465m rive-ted to the -lower-clamp bars through the members 45,

as shown, 'and attached to the lower faces of the barstfi, adjacent to each of the disks 10, is a -scraper element 47, to remove adherlng mattertrom the disks as they rotate.

The confronting bars 45 are coupled at the ends bypivoted rods'50 and 51, so that they move in unison with the disk units. 1

----The 'drivers'seat is represented at 52 and supported by the usual standard 53.5mm

the-beam member 22, the operating levers 3d and 35 being located-inconvenient position to the driver on the'seat.

"By this simple arrangement the four sets otdisk; units maybe easily adjustedtrom the drivers seat, and the units at each side of 'a' medial line adjustable independently of those at the otherside.

The disks may thus be readilyadapted to the condition or constituency ot the soil and the latter thoroughly pulverized and the ridges eliminated. I

The improved device is simple in construction, can be made. of any size and of any suitable materiahor combination of materials. w

' The preferred embodiment of theinvention is disclosedin the drawings and set forth in the specification, but it will be un- .units, and bars. pivotally connecting ends or said overlying beams of each tan- In-testimony whereof, I ture hereto. 7 I

a-centeirbeam, draft means pivotally .con-

nected thereto, a pair of. substantially J- .shaped members. having. .the. free ends of the curved portions secured in endopposed relation to said beam and having the. shank thereof directed rearwardlyiin divergent relation, a plurality of multiple disk units positioned rearwardly otsa1d beam and arranged in tandenibeneath and centrally transversed'by the shank of each member,

means for pivotally connecting. each unit intermediate its endsto the adjacent overlvin shank,v a connectin membenextendr: F b v mg across the rear or saidbeam and secured at its ends to said shank adjacent the point of merger of the shank with said curved portion, an actuating bar common to and pivotally connected to the inner-ends of each of the tandemunits, means carried on said beam and connected to each bar tor controlling the same, a beainoverlying and extending longitudinally of eachfiof the the dem unit togethen,

2. A harrow oi': the character described, a center bean a tandem series of multiple disk units oneach side of said beam,,bearing elements-arranged between certain of said disks of. each unit, each bearing carrying an upstanding arm constituting a keeper, a

vertical bolt extending upwardly through:

the arm oteach bearing, arigid bar element extending through a keeper of a bearing of each unit and pivotally secured theretoby "the bolt extending therethrough. and common to the units of each t-amdem series, saidbar element having one end secured to said beam, an actuating bar common to the units of each series and extending through a keeper of a bearing oteach unit and pivotally secured thereto by the bolt extending therethrough, and means mounted. upon said beam for controlling each actuating'bar to swing the units on said rigid bars.

affix my signa- EDDY W. sheet). 

